Talk:Crack closure
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Wiki Education Foundation-supported course assignment
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This article was the subject of a Wiki Education Foundation-supported course assignment, between 8 April 2019 and 20 May 2019. Further details are available on the course page. Student editor(s): Guwenjia.
Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 16:37, 18 January 2022 (UTC)